14583447 Microorganisms 2

8/13/2019 14583447 Microorganisms 2

1/17


2/17

Name : . Class :

Date :.

Topic : Microorganisms undergo life processes

1. Syazana carries out an investigation by sprinling a fe! drops of !ater on a slice of

bread. S"e puts t"e bread in a plastic bag and observes it for a fe! days.

T"e table belo! s"o!s t"e number of blac spots recorded by #mirul in four days.

Day

Number of blac

spots

1

$

$

%

&

'

(

1(

a) Name t"e blac spots appeared on t"e bread .

..

b) *"at is t"e purpose of t"is e+periment, -tuuan penyiasatan)

.

c) State an observation based on t"e result in t"e table above.-pemer"atian )

d) /ive an inference based on your ans!er in -b)-beri sebab)

...

e) *"at can you conclude from t"is investigation ,-esimpulan)

..

ENCIK MOHAMAD NAZRI BIN BASIRUN

GURU CEMERLANG SAINS SEKOLAH RENDAH

NEGERI KEDAH DARUL AMAN


3/17

CODE :5.2008.2

N#M0 : C#SS:.

D#T0 :

TOPIC : MICROORGANISMS UNDERGO LIFE PROCESSES.

QUESTION 2

2igure 1 s"o!s one plastic bag !it" a piece of moist bread in it3 !"ile t"e ot"er plastic

bag "as a piece of toasted bread on it. 4ot" plastic bags are placed in a !arm place for

t"ree days.

Table 1 s"o!s t"e results of t"e e+periment.

Brea

Moist bread

Toasted bread

T!e "#$%&%#$ #' (rea a'&er &!ree

a)*

4lac patc"es can be seen on t"e bread

No c"anges

a) 5n t"is e+periment

i) *"at is c"anged ,

ii) *"at is observed,........................................................................................

iii) *"at is ept t"e same ,..............................................................................

b) *"at is t"e purpose of t"is e+periment ,

...

..

c) State on "ypot"esis t"at can be build in t"is e+periment.

..

.

d) /ive an inference based on t"e condition of moist bread after t"ree days,

.

.

e) *"at is t"e relations"ip bet!een t"e presence of !ater and t"e gro!t" of mould,

.


4/17


5/17

TOPIC : MICROORGANISMS UNDERGO LIFE PROCESSES.

QUESTION +

T"e table belo! s"o!s t"e number of pupils of Seola" 6ebangsaan St. #nne7s

Convent "aving disease 8 from day 1 until day %.

Da)

1

$

&

(

%

N,-(er #' ,%/* !a%$1 %*ea*e

9

1

1(

1;

$$

a) *"at "appen to number of pupils "aving disease 8 from day 1 until day % ,

b) /ive your inference from your observation in


6/17


7/17

TOPIC: MICROORGANISMS UNDERGO LIFE PROCESSES

(. T"e diagram belo! s"o!s an investigation carried out by #imi Nadia . Se

fills $ teaspoons of dried yeast3 1 teaspoon of sugar and 1 ml of !ater

into a test tube. T"e mout" of t"e test tube is attac"ed to a balloon.

T"e table bello!s s"o!s t"e circumference of t"e balloon in % days.

1Da)

C%r",-'ere$"e 9

#' &!e (a//##$

3"-

$

;

&

1

(

1$

%

1(

a) State one observation based on t"e result in t"e table above.

b) /ive an inference based on your ans!er in -a)

.

c) *"at is t"e function of sugar in t"e test tube ,

..

d) *"at "appens to t"e circumference of t"e balloon !"en t"e day of

investigation increases ,

..

..

e) *"at is t"e aim of t"is investigation ,

.

.

g) *"at conclusion can you mae from t"is investigation,

..


GURU CEMERLANG SEKOLAH RENDAH



8/17


9/17


TOPIC : MICROORGANISMS UNDERGO LIFE PROCESSES

%. 2aizal carries out an e+periment on a slice of bread. >e taes t"e

follo!ing steps:

Step 1:

Step $:

Step &:

Step (:

Sprinles a fe! drops of !ater on t"e bread.

=uts t"e bread in a plastic bag.

?bserves t"e bread after four days.

@ie!s t"e sample of bread under a microscope.

T"e diagram s"o!s t"e observation obtained by 2aizal.

4read

@ie!ed under microscope

Moulds

-a) *"at can be observed after four days,

i. #re t"e moulds microorganisms,

444444444444444444444444

/ive reasons for your ans!er in -b) i.

444444444444444444444444

-b)

ii.

-c) To !"ic" group of microorganisms do t"e moulds belong to,

444444444444444444444444444

4ased on t"e diagram3

i. !"ere do t"e moulds come from,

44444444444444444444444..

ii. *"y do t"e moulds gro! on t"e bread,

44444444444444444444444.

*"at !ill be observed if t"e bread is left for anot"er t!o days,

.

-d)

-e)





10/17


11/17


TOPIC : MICROORGANISMS UNDERGO LIFE PROCESSES

9. #idura prepared t"ree slices of meat of t"e same size and labeled t"em

!i" A36 and. S"e ept t"ese meat at different paces and observed t"e rate of

decaying. Table 1 s"o!s t"e results obtained.

Mea&

A

6

P/a"e* !ere &!e -ea&

are 6e&

Befrigerator

iving room

4at" room

De"a)%$1 ra&e #' &!e

-ea&

@ery slo!

2ast

@ery fast

a) *"at is t"e aim of t"e investigation ,

..

.

b) State t"e follo!ing variables :

i)

ii)

t"ings is c"anged :

t"ings is observed : ..

c) State t!o factors t"at you s"ould ept t"e same if you !ant to prove t"at

t"e decaying rate of t"e meat depends on t"e places !"ere t"e meat areept.

c) *"y does meat A undergo a very slo! decaying rate,

..

d) *"at type of environment promotes t"e fastest gro!t" of microorganisms ,

.

e) *"at is t"e relations"ip bet!een places !"ere t"e meat are ept and t"e

decaying rate of t"e meat ,

..

..

-f) 2rom t"is e+periment3 give one reason !"y moulds are considered as

living t"ings.

.





12/17

Na-e :4444444444444444. C/a** :4444444 Da&e:44444.

Q,e*&%#$ 7

D%a1ra- *!#* a$ %$e*&%1a&%#$ "arr%e #,& () N#r-a/a. S!e -%e a #,1! %&! 9

&ea*##$ #' )ea*&. T!e #,1! a* /e'& #$ a &a(/e '#r !#,r*.

a ;!a& !ae$* &!e #,1! a'&er 2 !#,r*

14583447 Microorganisms 2

Documents

Transcript of 14583447 Microorganisms 2